Examkin

Soru

Zorluk: OrtaAWS Elastic Beanstalk

A developer needs to deploy a new version of a Java application to an AWS Elastic Beanstalk environment. The deployment must install a security patch on the host operating system using an environment configuration file named `security.config`. The application requires zero downtime during deployment, and the developer must ensure that if the deployment fails, the running production instances remain completely unaffected and do not require a manual recovery process. Which configuration and deployment setup meets these requirements?

  1. A
    Use the Rolling deployment policy, and place `security.config` in the `.ebextensions/` directory at the root of the application source bundle.
  2. Use the Immutable deployment policy, and place `security.config` in the `.ebextensions/` directory at the root of the application source bundle.Cevap
  3. C
    Use the Immutable deployment policy, and place `security.config` in the `ebextensions/` directory at the root of the application source bundle.
  4. D
    Use the All at once deployment policy, and place `security.config` in the `.ebextensions/` directory at the root of the application source bundle.

Cevap

Use the Immutable deployment policy, and place the configuration file in the `.ebextensions/` directory at the root of the application source bundle.
The correct answer proposes using the Immutable deployment policy and placing the configuration file in the `.ebextensions/` directory. The Immutable deployment policy performs an update by launching a second Auto Scaling group with instances running the new version. If these new instances fail health checks, Elastic Beanstalk terminates them, leaving the original environment and instances completely untouched. This satisfies the requirement that production instances remain unaffected in case of failure. Placing the configuration file in the `.ebextensions/` directory at the root of the source bundle ensures that Elastic Beanstalk successfully parses and applies the custom configuration.

Adım Adım Çözüm

1
Analyze the deployment downtime and rollback requirements from the scenario.
The application requires zero downtime and must guarantee that a failed deployment leaves running production instances completely unaffected.
These constraints eliminate the All at once policy (which causes downtime) and the Rolling policy (which modifies existing instances, risking inconsistent states if a failure occurs).
2
Select the deployment policy that isolates changes and guarantees safe rollback.
The Immutable deployment policy is selected because it deploys the new version to a temporary Auto Scaling group, ensuring the existing instances are untouched until the new version is healthy.
Immutable updates provide zero downtime and the cleanest rollback path by terminating the temporary instances upon failure.
3
Determine the correct directory structure for Elastic Beanstalk configuration files.
The configuration file must be placed in a directory named `.ebextensions/` at the root of the source bundle.
Elastic Beanstalk requires the leading dot in `.ebextensions/` to recognize and apply the configuration files during provisioning; a folder named `ebextensions/` without the dot is ignored.

Anahtar Kavram

AWS Elastic Beanstalk Immutable deployments and `.ebextensions` configuration directory naming.
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Konular

AWS Elastic Beanstalk

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